SHORT TOTAL SYNTHESIS OF THE CD RINGS-SIDE CHAIN FRAGMENT OF 25-HYDROXYVITAMIN-D-3 AND DE-AB-CHOLESTANE DERIVATIVES, INVOLVING 2 TANDEM MUKAIYAMA-MICHAEL CONJUGATE ADDITIONS

Authors
MARCZAK S MICHALAK K WICHA J
Citation
S. Marczak et al., SHORT TOTAL SYNTHESIS OF THE CD RINGS-SIDE CHAIN FRAGMENT OF 25-HYDROXYVITAMIN-D-3 AND DE-AB-CHOLESTANE DERIVATIVES, INVOLVING 2 TANDEM MUKAIYAMA-MICHAEL CONJUGATE ADDITIONS, Tetrahedron letters, 36(30), 1995, pp. 5425-5428
Citations number
32
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
36
Issue
30
Year of publication
1995
Pages
5425 - 5428
Database
ISI
SICI code
0040-4039(1995)36:30<5425:STSOTC>2.0.ZU;2-J
Abstract
A concise synthesis of the key building block (2) for 25-hydroxyvitami n D is described. Compound 2 has been prepared in 7 steps starting fro m ketene acetal 5b, unsaturated ketone 7 and ethylene ketal 11.